TWIST1 and colorectal adenoma: We performed a quantitative RT-PCR assay to analyze the mRNA expression of SNAI1 (Snail1), TWIST1 (Twist1), CDH1 (E-cadherin) and CDH2 (N-cadherin) in FFPE tissue samples of colorectal adenomas (n = 41), colorectal cancer (n = 10) and normal colon mucosa (n = 10).